The rebuilt 305 (original) that I recently installed on my 87 trans am knocks and vibrates. But, until recently, I assumed it was merely a symptom of a rich running problem that I've been chasing. After countless times of adjusting the Q-jet and the timing, however, the knock won't go away.
It doesn't sound like a lean running knock or like I'm using the wrong octane (93). It's very rythmic- knock knock knock?
I know that I'm using 10w-30 instead of 5w-30
and 3 months ago 2 torque c. bolts fell out,
but I replaced the bolts and they haven't gone anywhere since. Could my bearings be shot after 6000 miles? Could my crankshaft be warped.
Thanks for the help!